proportion of instances

USAGE SUMMARY

The phrase "proportion of instances" is correct and usable in written English.
It can be used when discussing the relative frequency or ratio of specific occurrences within a larger set of data or events. Example: "The proportion of instances where the treatment was effective was significantly higher than in the control group."

✓ Grammatically correct

Science

Encyclopedias

News & Media

Human-verified examples from authoritative sources

Exact Expressions

16 human-written examples

Law of nature, in the philosophy of science, a stated regularity in the relations or order of phenomena in the world that holds, under a stipulated set of conditions, either universally or in a stated proportion of instances.

Encyclopedia Britannica

Accuracy is the proportion of instances that are correctly classified.

Complex & Intelligent Systems

Finally, the measure returns the proportion of instances that have been discriminated.

Journal of the Brazilian Computer Society

General class information is given within the groups: the proportion of instances of the group that belong to each class.

Pattern Recognition

( frac{2 x precision mathrm{x} recall}{precision+ recall} ) Error Rate is the proportion of instances that are incorrectly classified.

Journal of Internet Services and Applications

The so-called DJD heuristics are able to best solve a large proportion of instances, but simpler and faster heuristics can outperform them in some cases.

International Journal of Production Economics

Human-verified similar examples from authoritative sources

Similar Expressions

44 human-written examples

By using RSIS, MIL ensembles are more robust to many data distributions and noise, and are not adversely affected by the proportion of positive instances in positive bags because training instances are repeatedly selected in a probabilistic manner.

Pattern Recognition

The precision is defined as the proportion of returned instances that are truly relevant; and recall is the proportion of relevant instances returned by the system [ 37]: P i = T P i r e t u r n e d   i n s t a n c e s i ;   R i = T P i r e l e v a n t   i n s t a n c e s i, where TP i (true positives) is the number of returned instances that are truly relevant for element i.

BMC Medical Informatics and Decision Making

Sensitivity measures the proportion of all instances of uncontrolled asthma that the model identifies.

BMC Medical Informatics and Decision Making

This measure returns the proportion of negative instances that were incorrectly reported as being positive.

Algorithms for Molecular Biology

Our results proved that the model is well suited to handle datasets with a high proportion of negative instances without recovering an excessive amount of false positives, which is important to perform predictive assays in complete proteomes.

BMC Genomics

Expert writing Tips

Best practice

When using the phrase "proportion of instances", ensure that the context clearly defines what constitutes an instance. This helps avoid ambiguity and ensures your audience understands the scope of your analysis.

Common error

Be careful not to confuse a high "proportion of instances" with statistical significance. A large proportion doesn't automatically imply that the result is meaningful or not due to chance; further statistical testing may be required.

Linguistic Context

The phrase "proportion of instances" functions as a noun phrase that identifies a statistical measure. It describes the relative frequency of particular occurrences within a defined set. As Ludwig AI confirms, the phrase is widely used in varied scientific contexts.

Expression frequency: Common

Frequent in

Science

80%

News & Media

10%

Encyclopedias

10%

Less common in

Formal & Business

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "proportion of instances" is a common and grammatically correct way to express the relative frequency of specific events or items within a larger set. As Ludwig AI indicates, it is particularly prevalent in scientific and academic writing. While alternatives like "ratio of instances" or "percentage of instances" exist, the best choice depends on the specific context and desired level of precision. When using this phrase, ensure clarity in defining what constitutes an "instance" to avoid ambiguity. Furthermore, while a high proportion might suggest a trend, it's crucial to conduct proper statistical testing to determine true significance.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

Ratio of instances

Replaces "proportion" with "ratio", emphasizing a quantitative relationship between instances.

Percentage of instances

Substitutes "proportion" with "percentage", expressing the frequency as a value out of 100.

Share of instances

Uses "share" instead of "proportion", indicating a part or allocation of the total instances.

Fraction of instances

Replaces "proportion" with "fraction", highlighting a part of a whole in the context of instances.

Rate of instances

Emphasizes the frequency or speed at which instances occur.

Number of instances

Focuses on the count rather than the relative frequency; it's about absolute quantity.

Amount of instances

Similar to "number", but emphasizes the quantity or extent of instances.

Part of instances

Indicates a segment or component of all instances considered.

Portion of instances

Similar to "part", but can imply a specific or allocated amount.

Frequency of instances

Focuses on how often instances occur, rather than their relative size within a set.

FAQs

How can I use "proportion of instances" in a sentence?

The phrase "proportion of instances" is used to describe the ratio or percentage of a specific type of event or item within a larger group. For example: "The "proportion of instances" where the new software improved efficiency was 75%."

What's a good alternative to "proportion of instances"?

Some alternatives include "ratio of instances", "percentage of instances", or "share of instances". The best choice depends on the specific context and the nuance you wish to convey.

Is it better to use "percentage of instances" or "proportion of instances"?

Both phrases are correct and often interchangeable. "Percentage of instances" expresses the ratio as a value out of 100, while "proportion of instances" expresses it as a fraction or decimal. The choice often depends on the desired level of precision or the conventions of the field you're writing in.

How does the "proportion of instances" relate to statistical analysis?

In statistical analysis, the "proportion of instances" is often used to calculate probabilities, assess the prevalence of certain outcomes, or compare different groups. It's a fundamental concept in descriptive statistics and hypothesis testing.